Controlled water stress in agricultural crops in brazilian cerrado

Authors

  • Igor Silva Santos Universidade Federal de Viçosa
  • Everardo Chartuni Mantovani Universidade Federal de Viçosa
  • Luan Peroni Venancio Universidade Federal de Viçosa
  • Fernando França da Cunha Universidade Federal de Viçosa
  • Catariny Cabral Aleman Universidade Federal de Viçosa

DOI:

https://doi.org/10.14393/BJ-v36n3a2020-47862

Keywords:

Irrigated agriculture., Evapotranspiration., Irrigation management.

Abstract

Considering the scenarios with reduction of water availability, the need to increase water use efficiency and crop yield, the objective of this study was to evaluate the effect of reducing the evapotranspiration of the main irrigated crops on productivity. Data from the years 2005 to 2016 for carrot, garlic, potato, sugarcane, bean, maize, soybean, wheat, coffee and cotton crops grown in the Brazilian states of Bahia, Minas Gerais, São Paulo, Goiás, Distrito Federal and Mato Grosso were collected. The crops were irrigated by central-pivot irrigation and drip irrigation systems, and irrigation management was performed using IRRIGER® software. With the information on potential crop evapotranspiration (ETpc) and crop evapotranspiration (ETc), it was possible to obtain a reduction of ETpc (%) for all crops. For all scenarios, these data were confronted with crop productivity and regression models were fitted. It was concluded that the maximum reductions of ETpc (%) without affecting productivity are 5% for garlic and potato, 12% for maize, 13% for bean, 15% for wheat, 20% for soybean and cotton, 25% for sugarcane and 30% for coffee.

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Published

2020-04-13

How to Cite

SANTOS, I.S., MANTOVANI, E.C., VENANCIO, L.P., DA CUNHA, F.F. and ALEMAN, C.C., 2020. Controlled water stress in agricultural crops in brazilian cerrado. Bioscience Journal [online], vol. 36, no. 3, pp. 886–895. [Accessed26 May 2022]. DOI 10.14393/BJ-v36n3a2020-47862. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/47862.

Issue

Section

Agricultural Sciences